Machine for grooving leather.



A. R. SCHOENKY. MACHINE FOR GROIOVING LEATHER. APPLICATION FILED JUNE 19. 1918.

1,296,859. Patented Mar. 11,1919.

2 SHEETS-SHET l.

August RSchoenky byfiWSmdZfX/W.

Afiys.

A; R. SCHOENKY. MACHINE FOR GROOVING LEATHER.

APPLICATION FILED JUNE I9, BIB.

InvenIor; AugusI RSO oenky byflewwi'S Him/M1 1 AHys.

* FF'PATENT 0FFICE- VAUGUVSTV'R. SGI-IOENKY, or solvrnnvrnnn, mnssncnusnrrs, ASSIGNOR TO nnnon'snon MACHINERY COMPANY, or BOSTQN; MASSACHUSETTS, A CORPORATION or MAINE.

i MAGHTNE FOB G ROOVING LEATHER.

To all whom it may concern:

Be it known that I, AUGUST R. SoIIonNKY, a citizen of the United. States, residing at Somerville, county of Middlesex, State of Massachusetts, have invented an Improvement in Machines for Grooving'Leather, of

,which the following description, in connec-.

tion with the accompanying drawing, is a specification, like characters on the drawing representing like parts. 7

This invention relates to a machine for forming a groove in the face of apiece of leather or other material and is particularly designed for use in forming in the surface of a shoe sole a groove to receive a shank stiffener.

.In the manufacture of shoes it is customary to employ a metal shank stifi'ener which is associated with the sole at the shankof the shoe, and the purpose of which is to give strength and stiffness ,to the shoe. shank. Sometimes the sole is provided with a groove in which such metal shank stiffener is received, and the machine herein illustrated is especially designed to provide a groove of this nature. The device comprises awork support on which the sole isreceived, a rotatable grooving tool which is adapted to out the required groove in. the face ofthe sole, means to movethe work support horizontally beneath said tool and means to. give the work support a movement toward and from the tool during its horizontal movement. The horizontal movement of the work support carries the shoe sole back and forth beneath the grooving tool and the vertical movement of the work support brings the shoe sole into engagement with the grooving tool so as to begin .the'cutting'of the groove. and maintains it in engagement, for a suffi-f 'cient time to permit a groove of the proper length to be out. The mechanism for reciprocating the work support and for moving it vertically are both adjustable so. as to pro-v vide for cutting grooves of different lengths and of difi'erent depths.

In order to give an understanding of the invention, I have illustrated. in the drawings a selectedembodiment thereof which will now be described, after which the novel featunes wi l. er ted sti 'th p en d;

claims .thefra ii e i support'baek and forth beneathgthe .too

he e fr aseimeyf be r e p ca t ry e e: erein illsst e t t --ll iteb e ie an Specification of Letters Patent. Patented Mar. 1 1, 1919. Application filed June 19, 1918. Serial No. 245,830.

ing the groove cut therein for receiving-the shank stiffener;

machine;

F 1g. 41s a section on the line 4l4:, Fig. 3

Fig. 5 is a section on the line 55, Fig. 3

Fig. 6 is a section on the line 6 6, Fig. 4;

Fig. a is a front view ofthe head a the V Fig. 7 is an enlargedsection on the line,

Fig.8 is an enlarged section on. the'line,

8-85 Fig. 3.

' trated has been designed for cutting a groove,

in a shoe sole to receive the shank stiffener.

In Fig. 2 I have illustrated a shoe sole at ,1 which is provided with a groove 2 therein at'theshank portion thereof, this groove be The groove is situated .at'the shank terminating adjacent the heel portion of the As stated above, the'machine herein illus sole and the other end .4 of the groove terminating just back of the ball portion of the sole;

The machine herein shown comprises a stand or frame 5 on which is supported a work support or work-receiving .tahlelfi adapted to receive the shoe sole land a re tary grooving tool? situated above the work support and adapted to act on the shoe sole to cut the groove 2 therein. The work supsole.

8 that is jouirnaled in suitable bearings .9

carried by the stand5, said shaft having a pulleylO thereon over which operates a. driving belt 11 that is driven from a driving pulley 12 on a driving shaft 13-. This drive ing shaft 13 may be driven from anysu itable source ofpower and I have herein shown it as provided with the fast pulley port is reciprocated unclerneaththe tool 7 as, 'the -lfatter rotatesin the direction of. the length of the groove so that during the; 'reciprocationof the work support the tool 7;

will operate to cut the groove 2 in the-shoe 1 The cutting tool 7 mounted ona shaft 14 and the loose pulley 15.with which a power belt cooperates. v. The. work support 6 is sustained in a carriage 16 which is slid ,able back and forth on ways 17: formedon the reciprocatinginovement of.

.1. ope at ng. .t rm'o e. the. vror as being actuated from a crank disk 170 by means of a link 18 which connects the crank disk to the slide. The link will preferably be adjusta bly connected both to the crank disk and to the carriage so that both the length of the reciprocating movement of the carriage and the position of the carriage relative to the tool may be adjusted. The

vcrank disk is shown as having a slot 19 therein into which one end of the link 18 is adjustably secured by means of a clamping bolt 20, and the carriage is provided with a slot "21 in which is received a clamping bolt 22' carried by the other end of the link 18. By adjusting the link in the slot 19 the throw of the crank disk will be regulated and by adjusting the link in the slot 21, thel osition of the carriage relative to the too is shown as mounted on a shaft 23 which is journaled in suitablebearings 24 carried by the frame and which is provided with a worm gear 25 that meshes with and is'driven by a worm 26 on a shaft 27 that is journaled in suitable bearings 28 carried by the frame. The shaft 27 has a pulley 2 9 thereon over which operates a belt 30 that extends around .a pulley 31 on the driving shaft 13.. The

carriage 16 thus derives its reciprocating movement from the driving shaft 13. I

In practice I propose to give the carriage 16 a reciprocating movement longer than the length of the groove to be cut so that when the carriage is at one end of its stroke, the work support will be in a position suf ficiently beyomi the grooving tool to permit a shoe sole to be readily placed in position, as shown in Fig.3. The movement of the carriage toward the left, Fig. 3, will carry the shoe sole beneath the grooving. tool, and when the shoe sole is in a position where-the end 3 of the groove is underneath the tool the worksupport 6 is raised to bring the shoe sole into engagement with the tool thereby causing the tool to cut into the sur;

' face of the sole. The continued movement For thus raising and lowering the Work support,.l have provided a cam which acts thereon during the movement. of'the carriage. This cam is shown as a cam groove "formed in ,a cam inember 36 thatis set j 'intoa groove 37 formed inthe ways 17 The cam groove is provided with the high portion '38 at one endand thelow portion 39 at the'other end.

The work support 6 is provided with a stem 40 "which extends down through -the justing screw 41 which may be adjusted. The crank disk 17 0 carriage 16, and said stem supports an ad screw threads through ablock 42 having a projection 43 extending therefrom which operates in the cam groove 35. The adjusting screw 41 pro vides for adjusting the block vertically relative to the stem 40 and thereby provides for adjusting the work support 6 relative tothe slide 16. hen the set screw 41 has been properly adjusted the block 42 is rigid with the stem, and as the carriage moves back and forth the projection 43 will travel in the cam groove 35. When the parts are in 'tlie position shown in Fig. 3, the projection 43 is in the low portion .39 of the cam groove and the work support is in itslowered position. Fig. 3 and the projection 43- passes from the low to the high portion of the cam groove the work support will be, raised, thusbringing the work'into engagement with the-cutting tool. 7 V i The cam member 36 is preferably adjustable longitudinally of the groove 37 "by means of the adjusting screw 44 and, therefore, the cam groove can be adjusted so as T to cause "the work support to have its rising movement at any point in its travel;

The work support 6 is provided with work clamps for clamping the work in place dur- As the slide moves toward the left r 10o been completed. 7

Further, said work clamps act also as edge guides for properly positioning the sole. The work-clamp ng device comprises a )luralitv of airs of clam Ding members 32 c P a, ,4

each provided with an overhanging lip 98 adapted to overlie the sole'and also provided with an edge 99 adapted to engage the edge of the sole and thereby position the latter. Each pair of cla nps '32 are adjustably versely of the work'support 6 and operates in a groove97 therein. The clamps can be adjustable longitudinally of the bar 33 in order to fit soles of difierent sizes and they. are held in their adjustable position by clai np screws 96. When they are properly positioned a sole can be inserted beneaththe lips 98, as indicatedfin dotted lines Fig. 5,. and the combined clamping members and edge gage then serve to hold the sole in proper position.

Each bar 33' "has a stem. 53 depending therefrom which extends through the work support and also through a boss orea'r 54 on the carriage 16. Each stem 53' ha's aclan'ip'-' lifting spring 55 encircling the same and situated between the 'bar33f and the boss 64,

said spring actingvnorm'allyfto hold "the work clan'ips raised suificiii'tly above the j mounted on a bar 33 that extends tr'ansv disengaging member pivoted to the frame at surface-of theitable'ti to permit a sole to be inserted beneath the clamps. Each stein153 is-also provided with a cushion spring 56 which is, situated betweentheboss 54 and a1 the springs 56 will be underno'tensionand thesprings will, hold thework clamps raised. When the Work table moves to the rightl ig'. 3 and is lifted by the projection passing into theihigh portion 38 of the cam, such upward movement of the'wor'k table will move the latter towardthe worlc clamps-and thus cause the/sole to be firmly clamped between the work clamps and the work table. The cushion springs 56 allow a i yielding movement to the work clamps during: thefclamping action thereby to compensate for any variations in the' thickness of" thersole or otherniaterial being clamped lVhen the work table'inoves back into the position shown inFigL 3 and islowered the ,worlvclamps will be automatically liftedl to release the-work by the, action of the springs. 55.

I will: preferably riage :lfi will'niakeone forward and backward reciprocation and "then'will bee-brought to rest so that inoperating the machine the operator may place a sole onthc work sup-; port. set the machine in operation thereby causing the carriage to move to the limit of its extent to the left,*andthen to return to the position shown in Fig. 3, at which time the-machine will be brought to i'est,'lthus-en-' abling the operator to remove the grooved sole and place an ungrooved sole on the work support. Any suitable stop device may be employed to bring the machine to rest after each cycle of operations. I have herein shown the worm gear 25 as connected to the shaft 23 by a one-revolution clutch device comprising a collar 45 fast on the shaft 23 and having a spring-pressed clutch-dog 46 pivoted thereto which is adapted to engage teeth 47 formed on a collar 4:8 that is rigid with the gear 25. 49 indicates a clutch- 50 and connected by a link 51 to a treadle 52. When the machine is at rest the clutch-dis engaging member 49 engages the tail of the dog 46 and holds it out of engagement with the teeth 47, thus permitting the gear 25 to rotate freely without giving rotation'to the shaft 23, When the treadle 52 is depressed the member 49 is withdrawn from the tail of the clutch dog e6, thus allowing it to come into engagement with the teeth at. The gear 25 is thus coupled to the shaft, and theshaft 3 will rotate; If the treadle is released as soon as the shaft has started to rotate. then when the shaft completes its rotation and provide means whereby: when the machine is SBhzlIl operation the car 'as the latter reciprocates;

the work support is brought into the :Posi

tion. shown in Fig. 3, the tail of theclutch 7 dog will engage the inember tt), thus rdise: engagingthe clutch dogfrom the teethJ t'Z;

I claim: V i 1.. In a machine for grooving leather and similar material, the combination with 11111 worksupport, of a rotatable grooving tool,

means to move the work support beneath the V V tool, and means for automatically raising and lowering the work support as it moves beneath the tool.

2. In a machineifor grooving leather or similar material,; the combinationnwitlrflaiV rotatable groovingitool, of awork support,

"86 'meansito reciprocate the worksupport be- 'neath the tool inthe direction in which the groove is to be cut, and means'operative to f ing its reciprocation in one'direction. and

away from the tool during its reciprocamatically'to move thework support-toward and from the'tool during its reciprocation.

4:. In a machine for grooving leatherand" similar material, the combination 'Wlllh ilwork support, of a rotatablecgroovingtool situated above the work support, a reciproeating carriage on which the work support is mounted, and a cam device for raising and lowering the work support on the carriage:

5. in a machine of the class described, the combination with a rotatable grooving tool,

of a work support, areciprocating carriage tomatic means for clamping the work to and unclamping it from said work support as the latter is raised and lowered. V

7. In a machine for grooving leather and similar material, the combination with a work support, of a rotatable grooving tool, means to move the work support beneath said tool, means to raise and lower the work support as it moves beneath the tool, and means to clamp the work to the work sup- 1 move the work support toward the tool dur-q movement of the "latter port by'; the risin iy the lowering movement and to uncl'amp it thereof;

8'. In a machine for grooving leather and 5 similar material, the combination With work support, ofa rotatable grooving tool, means' to move the Work support-beneath said tool,means toraise andelower the Work support as it moves beneath'th'e tool, Workclampingmembers, and means to cause said members to clamp the work againstthe-Work support when the latter is raised.

9'. iIn amachine 'for grooving leather or -simil'a;r"marterial, the combination with. a rotatable grooving tool, of a work sup'port,

means to reciprocate the work support "beneaththe'tool in the direction in 'vvllichthe" grooveistobecut, means to move'th'e Work rality-"of'combined work-clamping members and "edge gages, and means to cause said members to clamp the Work against the work support 'vvhenthelatter is raised and to release'the Work when the Work support is lowered. '11. In a machine for grooving leather aind similar "material, the combination with a 1 zeepse Work support,"of a rotatable grooving tool,

means to 'move the work'support beneath said toolymeans'to raise and lower the Work support as it moves beneath the tool, a.plu-' and edge gages adjustable transversely of the work support, and means to cause said members'to clamp and'unclam the Work asthe work support is raised and owered'.

40 rality of combined Work-clamping members '12. In a machine for 'grooving leather and similar material,- the combination with a Work support,-of arotatable grooving tool, means-to reciprocate the worksupportbeneath' the tool,'and means operative during thereciprocation of the Work-support in one direction to c'ause it to move tovvard'the'tool and-during its'reciprocation in the opposite direction to cause it to move'away from the tool. 7 r

13'. In a machine for grooving leather or similar material, the combination with a Worksupport, of a rotatable grooving-tool, m'ea'ns to'mo'vethe work supportbeneath the tool, and'mean's operative automatically duringthe movement-of the Work support to cause thela'tter to move toward thetool.

14. In a machine for grooving leather or similar material,- the combination with a Work support, of-a rotatable grooving "tool,

means to' move the Work support beneath the tool and means operative at a point between the limit of'movement of the Work support to cause it tomove toward the tool.

In testimony whereof Ihave signed my nameto this specification. g g

' AUGUST R. SCHOENKY.

Gopierot thirpatcntmay be obtained (or fivewents each, by addr'essing'the Gominissibner 0! Patents, wasliingtomn fl. V 

